第25卷第2期 2017年6月
北京石油化工学院学报
Journal of Beijing Institute of Petrochemical Technology
文章编号：1008-2565(2017)02-0040-05
天然气管道动态泄漏率的数值研究
董靖宇，王岳，范庆宇，王喆
（辽宁石油化工大学石油天然气工程学院，辽宁抚顺113001）
Vol.25No.2 Jun.2017
摘要：天然气泄漏率是影响管道安全评价的重要因素之一，能够为安全评价提供数值依据，根据天然气管道动态泄漏率计算模型，利用Matlab软件分别计算了不同工况下临界泄漏阶段和亚临界泄漏阶段的泄漏率，从而获得了动态泄漏率的变化规律和不同固素对动态泄漏率的影响，结果表明：泄漏率在临界泄漏阶段变化率较大，在
亚临界泄漏阶段变化率较小，临界泄漏阶段
用的的时
影响动态泄漏率的固素有泄漏
亚临界泄漏阶段，
孔径初始管内剩余气体质量，初始压力等。在其他条件相同时，泄漏孔径大的管道初始泄漏率和泄漏率的变化都大，泄漏所用时间短，不同初始管内剩余气体质量对初始泄漏率没影响，但剩余质量大的管道泄漏率变化小，泄漏持续时间长；初始压力大的管道初始泄漏率也大，泄漏所用的时间长，
关键词：动态泄漏率：临界泄漏阶段；亚临界泄漏阶段；数值计算
中图分类号：TE83
文献标志码：A
DOl:10.12053/j.issn.1008-2565. 2017.02.009
Numerical Study of Dynamic Leakage Rate of Natural Gas Pipelines
DONG Jingyu,WANGYue,FANQingyu,WANG Zhe
(College of Petroleum and Natural Gas Engineering ,Liaoning University of
Petroleum & Chemical, Fushun 113001, China)
Abstract: The leakage rate of natural gas is one of the important factors that affect the safety of e-valuation of the pipeline, the calculation of which can provide a numerical basis for safety evaluation. According to the calculation model of the dynamic leakage rate of natural gas pipelines, the leakage rate of the critical leakage phase and the sub critical leakage phase in different operating conditions were calculated by using Matlab software. The results show that the change of leakage rate is larger in the critical leakage phase than that in the sub critical leakage phase. The critical leakage phase is much longer than that of the sub critical leakage phase. The factors influencing the dynamic leakage rate are the leakage aperture, the quality of residual gas in pipe and the initial pressure. When other conditions are the same+ the pipeline with large leakage aperture has a big initial leakage rate and great changesin the leakage rate while the time of leakage is short. Different quality of the residual gas in pipelines has no effect on the initial leakage rate, but the pipeline with quality of residual gas has a small change in leakage rate+and the leak lasts for a long time. The pipeline with large initial pressure has a large initial leakage rate and it takes more time for gas leakage.
Key words: dynamic leakage rate; critical leakage phase; sub-critical leakage phase: numerical cal-culation
收稿日期：2016-08-30
作者简方数据(1990—），男，颈士，研究方向为天然气管道，E-mail：fsdjy@163.com，